or u can go to home depot and buy a precision torx kit for about 6 bucks. Thats what i use, and it works on all of my knives (kimuras, benchmades, ccc's, whatever) Unless you want to pay the extra 15 bucks so the case says "Benchmade" on it instead of "Husky" ..
Dont get me wrong, i love benchmade and constantly mark-out to their knife making ability, but the screwdriver i use to adjust my knives doesnt have to say Benchmade on it. Lowe's also carries them, but there you will be looking for "Kobalt" brand instead of "Husky"
Hope this helps.